Prescription Glasses Lens Guide: Lens Types and Materials

Hello doctor! Can you suggest me which lenses should I get for my self
My number is -
Sph Cly Axis
R -6.00. -0.50. 20.0
L. -6.00. -0.75. 36.0

I have astygmatism and I'm pretty sure I got high index for that. I've kind of forgotten my exact prescriptions and the optician didn't really show me anything my last eye check like homer simpson's dream where he doesn't get to see the product he invented

If I have an interest in buying my own lenses, is there a way to tell which ones are my prescriptions or do i just have to ask? I tried an app before and it can't tell what a high index prescription is

what happened to good old glass?

Hands Down... One of the most genuine and engaging eye doctors on the planet!! I learn something every single video. Thank You, teaching us whenever you can. Truly appreciate you.

CR39 and flat top 45 bifocal. I have a pair for distance and near and one for intermediate and near (my computer glasses). I see no reason to even consider the tradeoffs of progressive lenses.

1 - cr39 =
2- polycarbonate = soft plastic, thin lightweight, shatter resistant but not so scratch resistant. Recommended for construction work sports etc to prevent injuries. Low abbe value so more aberrations.
3- trivex = trademark material stronger than cr39 just like polycarbonate but better than polycarbonate less aberrations. Smell bad
4 - high index = 1.69 1.74, thin lightweight given in high prescriptions, give more reflections so good anti reflective coating is recommended
5- photochromic lenses= photosensitive lenses

So I have sunglasses with prescription polycarbonate. The tint is honestly not all that great, and sometimes I can't really see in bright sunlight all that well. Where I got them from says that polycarbonate doesn't tint as much as plastic. Is Trivex maybe a better alternative to have more tint?

If I don’t have the PD distance can I use 62? I have been told that’s neutral.

I need glasses for far distance

What material is the High Index lens, plastic of glass? Same question for the Trivex lens.Thanks.

Hii is essilor a good lense cause I'm getting this on my frame?

I have Macular in both eyes and was wondering if a premium lens is worth the extra cost for a macular eye wearer ?

I have had bad experiences with "coatings gone bad". The last glasses I got I said not coating please. However they still sent bad after two years and I could hardly seeing out of them. I have been carefully to wash them with warm water and common soap, but some of have said that is the problem. I assume (but don't know for sure) that the lens material is either CR39 or poly-carbonate. I just got new glasses and would like to know the best way to clean them to avoid this problem.

Hello, my biggest concern is paying for a lens I don’t need, because I’m not knowledgeable enough to know what is best. I don’t want my lenses sticking out of my frame. It is mind boggling deciding. Some charts that you find online are vague & results vary. Will anti-glare reduce aberrations with polycarbonate? The SPH in my Rx is fairly low farsightedness w/ an OD of 0.00; OS of +1.00, but my CYL/astigmatism is higher in my left eye at -3.50 & -0.75 in my right. I’m not sure which index would be best/not super heavy. I guess it depends on the frame? I tend to try to avoid bulky plastic frames & prefer metal or thinner wire frames. So I’m always annoyingly indecisive when ordering glasses online lol & it takes a while to commit. Based off the info I shared, would mid-index 1.57 be too heavy for my Rx? Or should do 1.59 poly or 1.61 high index? Thank you.

Great video. You explained everything perfectly.

Hi I'm from Guyana how much dose your glases cause

What do you have to say about AliExpress prescription lenses? Are they well made or will they damage your eyesight ?

My lenses are hard to clean. They are always cloudy. I have bifocals.

Doc what is CEG with LGC eyeglasses

Hi dear how are you I m watch your channel I got a lot of knowledge I ask a Question my number is - 6.5 so I use a small frames for better vision my other question is I use to Glass lens which Glass lens is better for me .
Thanks

Hi dear how are you I m watch your channel I got a lot of knowledge I ask a Question my number is - 6.5 so I use a small frames for better vision my other question is I use to Glass lens which Glass lens is better for me .
Thanks

"high prescription" and I'm like oh that's my left eye, thinking he's gonna say a super high prescription but then he says -2.00 and I'm like 😭😭 mine is -5.00

My prescription are -0.25 -3.00*20 , -0.75 -3.00*180 they gave me a 1.5 index lenses and i'm not happy right now :<, randomly blurriness 🤢

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The description in the receipt says ophthalmic lens; about a year later there are peelings like spots on the outer layer of my lens as if in a tinted glass layer of your car...😡😡

Your videos are so helpful. Im looking to buy prescription glasses online and have been a bit overwhelmed with all the minute (though major) things to understand...I lowkey wish Id studied to be an optometrist now lol...Thank you

they have one thing in common, they are all overpriced

What about Nylon vs Trivex lens material?

What about tinted glasses?

For me CR39. I am waiting for my new glasses, I notice that the lenses are described as ULTIMATE CR39. What does that mean, exactly?

I always find it odd that in North America you call glasses "Eye Glasses" in the rest of the world". We just call them "glasses" because where else are you going to put them?! It's a big like Horse back riding. Where else are you going to ride on a horse lol

I just received a pair of glasses from LensCrafters. The lenses have AR, blue light, and anti-smudge treatment. The problem is I can see the coating only covers the center of both lenses as if it was applied after the lenses were already in the frame? Around the perimeter there is nothing and is visibly different from where the AR coating is applied. Can you help me make sense of this?

Thank ❤you. I went with Silloette 5540. PC lens. Transition, progressive Crizal. Rimless. Love them. 18gm.

Your page is amazing. You broke this down in such a simple way. Easy to understand. Now I know exactly what I need. I appreciate this. Thank you.

What are best glasses to get if u have migraine are sensitive to light?

My doctor of 42 years passed away and his wife closed the office and only gave 2 weeks to get our files. I did not even know he had passed and lost 4 decades of info.

I need to know what to look for in new doctor and what is the best/most advanced way to get prescriptions.

Thank you Dr Allen

Great education on lenses. I perhaps be OK with Progressive. Trivex n high index sound very appealing, don't know cost differential with progressive. Good day sir

You forgot to mention glass

I recently ordered my first glasses, I use glasses only indoors in front of a computer and sometimes for reading books. Despite my use case, the seller pushed to "Upgrade" for polycarbonate lenses, in case I decide to do sports in my computer glasses. After this video, I understood that for my use case, polycarbonate has only disadvantages - optical quality and scratch resistance for polycarbonate are worse than for CR-39. The cost was not a big issue, I was ready to pay extra since I spent 10+ hours in front of a computer screen every day. I ordered cheaper alternative CR-39 lenses, +1.0 and +1.5, and some special "Eyezn" coating with blue light blocking that is designed for computer use. I am very satisfied, needed those glasses for a couple of years if not longer. All that consultant told me is that polycarbonate is overall better than cr-39, so I should upgrade to that material. After this video, I understood that standard cr-39 lenses have other advantages on top of cheaper prices, but sellers will tend to "upsell" more expensive options no matter what your use case is.

Is there a visual difference between polycarbonate and high index for the person’s eyesight? Or is it just the thinner and lighter material?

Are high index glasses the same as aspherical lenses?

Hello, my name is Cosmo Frank Guarriello Jr. Im looking for big frames, glass or trivex lenses and I also want to do a eye exam., the size I'm looking for is 60-18-150. The lenses I want are glass lenses or trivex, brown transitions the latest tech, 2year warranty, super hydrophobic, scratch resistant, UV protection, blue light, anti fog, durable, anti water, anti oil, anti smudge also very important I want thick lenses not shaved down or thin, very thick is what I want. Which one do you recommend for what I want?

I want your help plsss!!
Respond

Good information.. thanks

Dr Allan can you please talk more on Farsighted lenses please high index

Super helpful. Thank you!

-2 is considered a high prescription now??

Thanks